Multimode communication charging system, method and equipment adaptive to basement and medium
By integrating PLC, 4G/5G, LoRa communication modules and adaptive switching algorithms, the problem of communication instability caused by signal attenuation in basement environments has been solved, achieving stable communication and low-cost deployment, and improving operation and maintenance efficiency and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-03-10
AI Technical Summary
In basement environments, signal attenuation is severe, communication reliability is low, and existing charging piles lack multi-mode adaptive switching capabilities, resulting in unstable communication and high deployment costs.
It adopts three communication modules: PLC, 4G/5G, and LoRa, combined with an intelligent adaptive switching algorithm, to form a stable communication network through power line carrier communication and adaptive switching, thereby reducing system cost and power consumption.
It achieves stable communication in basement environments, reduces deployment costs, improves adaptability and operational efficiency, and supports remote configuration and OTA upgrades.
Smart Images
Figure CN121625864A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a multi-mode communication charging system and method adapted to basements, equipment and medium. BACKGROUND
[0002] With the popularity of electric vehicles, basements as the mainstream parking scene, the deployment demand of charging piles has grown dramatically. However, the closed environment of the basement makes the communication problem particularly prominent. First, the signal attenuation is serious, and the communication reliability is extremely low. The basement has no outdoor direct connection signal, and the 4G / 5G signal attenuates sharply after penetrating the wall, and the reference signal receiving power (RSRP) is often lower than -120dBm, which makes it impossible to normally implement the core functions such as remote start and stop, state reporting, and billing settlement. The existing single LoRa communication scheme has the problems of low transmission rate and weak anti-interference ability, and it is difficult to meet the demand of large data transmission such as firmware upgrade. Secondly, the multi-communication mode switching function is missing, and the adaptability is poor. Most of the existing charging piles use single communication mode or simple dual-mode backup, and do not design adaptive switching mechanism for the complex electromagnetic environment of the basement, which has the problems of high switching delay and frequent mis-switching, and cannot guarantee the continuity of communication. Finally, the cost of additional communication facilities is high. In order to solve the signal problem, the traditional scheme needs to lay special communication cables or install multiple sets of signal relay equipment, which not only increases the deployment cost by more than 50%, but also is limited by the pipeline layout of the basement, resulting in high construction difficulty and long construction period. Therefore, the industry urgently needs an intelligent charging pile system that can adapt to the basement environment, has multi-mode adaptive switching capability and relies on power line carrier as the core communication technology, to solve the industry pain points such as poor signal and unstable communication. SUMMARY
[0003] In order to solve the above problems, the application provides a multi-mode communication charging system suitable for basements, which comprises: an alternating current input unit for receiving external alternating current power input and providing power for the whole charging system; a charging power module connected with the alternating current input unit and provided with a charging interface, the charging power module being used for converting alternating current power provided by the alternating current input unit into direct current power and adjusting output power according to instructions of a main controller; the main controller being connected with the charging power module and being used for monitoring and managing a charging process, the charging process including charging power adjustment, communication mode selection and switching, fault alarm, execution of remote control instructions, and data processing and protocol conversion to realize information interaction with a man-machine interaction unit and a multi-mode communication module; the multi-mode communication module including a PLC communication module, a 4G / 5G communication module and a LoRa communication module, and being used for information interaction with the main controller; and the man-machine interaction unit being connected with the main controller and being used for obtaining charging state information and displaying the information to a user and receiving operation instructions of the user and transmitting the instructions to the main controller for execution.
[0004] In one example, the PLC communication module adopts HPLC protocol or G3-PLC protocol, the modulation mode is OFDM, and the communication rate is 100 kbps-1.2 Mbps; the PLC communication module injects signals into an alternating current power line through capacitive coupling, and connects multiple charging piles to a concentrator through a power distribution line according to star-type networking to form a stable communication network.
[0005] In one example, the 4G / 5G communication module is compatible with an operator network, and the highest communication rate is 1 Gbps; the 4G / 5G communication module has a signal strength real-time monitoring function and outputs RSRP index data to determine a decision basis according to the RSRP index data to switch communication modes when signal quality decreases.
[0006] In one example, the working frequency band of the LoRa communication module is 470-510 MHz, the spread spectrum modulation technology is adopted, and the communication distance is 1-3 km; the LoRa communication module supports tree-type networking.
[0007] In one example, the main controller is provided with an adaptive switching algorithm to real-time monitor signal quality and transmission state of the multi-mode communication module according to the adaptive switching algorithm, including 4G / 5G signal strength, LoRa received signal strength, PLC communication error rate and heartbeat packet transmission state; according to preset priority rules and switching conditions, the adaptive switching algorithm is used to automatically select and switch to corresponding communication modes.
[0008] In one example, the priority and switching threshold of the adaptive switching algorithm are determined to switch modes according to the priority and switching threshold.
[0009] In one example, the multi-mode communication module and the main controller share resources in hardware, and the shared resources include a DSP processor, an ADC sampling circuit, and a data storage unit.
[0010] In another aspect, the application also provides a multi-mode communication charging method adapted to a basement, which is applied to the system of any one of the above examples, and the method further comprises: the main controller collects transmission parameters of each communication module in real time, determines a corresponding priority according to the transmission parameters, and determines a communication mode according to the priority and a switching condition; mode switching is performed according to the communication mode, and a switching state is recorded; communication parameters are configured through a pre-set cloud platform, and an OTA upgrade operation is performed.
[0011] In another aspect, the application also provides a multi-mode communication charging device adapted to a basement, which comprises: at least one processor; and a memory in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the multi-mode communication charging device adapted to a basement to perform the method of the above examples.
[0012] In another aspect, the application also provides a non-volatile computer storage medium storing computer executable instructions, and the computer executable instructions are configured to perform the method of the above examples.
[0013] The application integrates PLC, 4G / 5G, and LoRa communication modules, and combines an intelligent adaptive switching algorithm to ensure stable communication in a basement environment and solve the problem of function failure caused by poor signal. At the same time, the resource sharing design reduces system cost and power consumption and improves integration. The main controller collects and analyzes transmission parameters in real time, automatically selects the optimal communication mode, and supports remote configuration and OTA upgrade, which greatly improves operation and maintenance efficiency and system flexibility. The overall scheme has low deployment cost and strong adaptability, is suitable for underground parking lots of different scales, and has significant economic benefits and social value. BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings, which are included to provide a further understanding of the application, constitute a part of this application and illustrate embodiments of the application and the description thereof, which serve to explain the application, and do not constitute improper limitations on the application. In the drawings: Figure 1 FIG. 1 is a flowchart of a multi-mode communication charging method adapted to a basement according to an example of the application; Figure 2 FIG. 2 is a schematic diagram of a multi-mode communication charging device adapted to a basement according to an example of the application. DETAILED DESCRIPTION
[0015] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in connection with the specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0016] The technical solutions provided by the embodiments of the present application will be described in detail below in connection with the drawings.
[0017] As shown in Figure 1 In order to solve the above problems, the present application provides a multi-mode communication charging method suitable for basements, which is applied to a multi-mode communication charging system suitable for basements. The system comprises: An AC input unit is used to receive external AC power input and provide power for the whole charging system. A charging power module is connected with the AC input unit and is provided with a charging interface. The charging power module is used to convert the AC power provided by the AC input unit into DC power and adjust the output power according to the instruction of the main controller. A main controller is connected with the charging power module. The main controller is used to monitor and manage the charging process, which includes charging power adjustment, communication mode selection and switching, fault alarm, execution of remote control instruction, and is also used for data processing and protocol conversion to realize information interaction with the man-machine interaction unit and the multi-mode communication module. A multi-mode communication module includes a PLC communication module, a 4G / 5G communication module and a LoRa communication module. The multi-mode communication module is used to interact with the main controller. A man-machine interaction unit is connected with the main controller. The man-machine interaction unit is used to obtain charging state information and display it to the user, and receive the operation instruction of the user and transfer it to the main controller for execution.
[0018] In one embodiment, the PLC communication module adopts domestic HPLC protocol or international G3-PLC protocol, uses OFDM modulation technology to achieve a communication rate of 100 kbps to 1.2 Mbps, injects signals into the AC power line through capacitive coupling, ensures that it does not affect the normal transmission of power, supports star topology networking, enables multiple charging piles to be connected to the concentrator through the power distribution line, and forms a stable communication network; the 4G / 5G communication module is compatible with mainstream operator networks and supports full-network access with a maximum communication rate of 1 Gbps, fully meeting the demand for large data transmission, and has real-time signal strength monitoring capability, which can output RSRP index data for analysis; the LoRa communication module works in the 470-510 MHz domestic unlicensed frequency band, uses spread spectrum modulation technology, has a communication distance of 1 to 3 kilometers, has low power consumption, and supports tree networking, which is very suitable for deployment scenarios of large-scale charging piles in basements.
[0019] In one embodiment, the master MCU collects parameters of each communication module in real time, including 4G / 5G signal strength (RSRP), LoRa received signal strength (RSSI), PLC communication error rate, and heartbeat packet transmission state. The system has preset priority rules, and by default, when the PLC communication error rate is less than 1%, it is used preferentially, if the PLC signal is poor, i.e., when RSRP≥-110 dBm, it is switched to 4G / 5G, and when RSSI≥-120 dBm, it is switched to LoRa. The switching trigger condition is: if the RSRP of 4G / 5G in the current communication mode is lower than -110 dBm or the heartbeat packet is lost for three consecutive times, the RSSI of LoRa is lower than -120 dBm or the transmission delay exceeds 500 ms, and the PLC error rate reaches or exceeds 1% or the communication interruption exceeds 1 second, the system will automatically switch to the suboptimal communication mode; in addition, the system also supports remote configuration of communication priority and switching threshold to adapt to the special needs of different basement environments, and the communication mode and switching state can be displayed in real time through LED indicator lights and APP, which is convenient for users and administrators to monitor.
[0020] In one embodiment, in the control and interaction process, the system is equipped with a touch screen and a two-dimensional code scanning interface to facilitate users to perform local charging operations and parameter queries; the system can automatically select the optimal communication mode to upload charging data to the cloud platform to realize functions such as storage of charging records, electricity bill settlement, fault alarm, and remote start and stop control; at the same time, the system supports OTA remote upgrade, which can update the communication protocol and switching algorithm online, greatly improving the maintainability and adaptability of the system; in addition, the system also has a communication state log recording function, which can automatically store communication mode switching history and fault information, providing convenience for later fault troubleshooting.
[0021] In one embodiment, in terms of hardware resource sharing design, the system realizes the sharing of PLC, 4G / 5G, LoRa module and master control unit DSP processor. Through this design, the system can uniformly process data and complete protocol conversion, improving the data processing efficiency. At the same time, these modules also share the ADC sampling circuit and data storage unit, effectively reducing hardware redundancy, thereby reducing system cost and power consumption, and improving overall economy and energy efficiency ratio.
[0022] On the other hand, the application also provides a multi-mode communication charging method suitable for basements, which is applied to the system as described in any one of the above embodiments. The method comprises: S101, the master controller collects the transmission parameters of each communication module in real time, determines the corresponding priority according to the transmission parameters, and determines the communication mode according to the priority and switching conditions.
[0023] S102, mode switching is performed according to the communication mode, and the switching state is recorded.
[0024] S103, the communication parameters are configured through the pre-set cloud platform, and the OTA upgrade operation is performed.
[0025] In one embodiment, in terms of communication reliability, the PLC module utilizes the power line transmission characteristics and is not affected by the closed environment of the basement. In combination with the adaptive switching mechanism of the 4G / 5G and LoRa modules, the communication dead angle effect is achieved, effectively solving the functional failure problem caused by poor signal; in terms of deployment cost, the system does not need to lay additional communication cables or install relay equipment, and can realize PLC networking relying on the existing power distribution line, which can save more than 30% of the deployment cost, while greatly shortening the construction period; in terms of adaptability, the three-mode communication method can be compatible with different basement signal environments, whether it is a small underground garage or a large underground parking lot, and can be applied to new charging piles and stock charging piles; in terms of operation and maintenance efficiency, the remote configuration and OTA upgrade function reduces the on-site maintenance workload, and the real-time monitoring of the communication state and the log recording function facilitate rapid troubleshooting.
[0026] As shown in Figure 2 The application also provides a multi-mode communication charging device suitable for basements, which comprises: at least one processor; and a memory in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the multi-mode communication charging device suitable for basements to perform the method as described in the above embodiments.
[0027] The embodiment of the present application further provides a nonvolatile computer storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the method as described in the above embodiment.
[0028] In the 1990s, it was possible to distinguish whether an improvement in a technology was a hardware improvement (e.g., an improvement in the circuit structure of a diode, transistor, switch, etc.) or a software improvement (an improvement in a method flow). However, as technology has advanced, many improvements in method flows today can be considered as direct improvements in hardware circuit structures. Designers almost always obtain a corresponding hardware circuit structure by programming an improved method flow into a hardware circuit. Therefore, it cannot be said that an improvement in a method flow cannot be implemented using a hardware entity module. For example, a programmable logic device (PLD) (e.g., a field programmable gate array (FPGA)) is an integrated circuit whose logic function is determined by user programming of the device. A digital system is "integrated" on a PLD by the designer programming it himself, without having to ask a chip manufacturer to design and manufacture a special integrated circuit chip. Moreover, instead of manually fabricating an integrated circuit chip, this programming is now mostly implemented using "logic compiler" software, which is similar to a software compiler used when developing a program, and the original code before compilation must also be written in a specific programming language, which is called a hardware description language (HDL), and there are many types of HDL, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language), etc., and the most commonly used are VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art should also be aware that it is very easy to obtain a hardware circuit that implements a logical method flow by simply logically programming the method flow in one of the above-mentioned hardware description languages and programming it into an integrated circuit.
[0029] The controller can be implemented in any suitable way, for example, the controller can take the form of a microprocessor or processor and a computer readable medium storing computer readable program code, such as software or firmware, executable by the microprocessor, logic gates, switches, an application specific integrated circuit (ASIC), a programmable logic controller and an embedded microcontroller, examples of which include but are not limited to the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, the memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art will also know that, in addition to implementing the controller in pure computer readable program code, it is also possible to implement the controller in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers and embedded microcontrollers, etc. to achieve the same function by logically programming the method steps. Therefore, such a controller can be considered as a hardware component, and the means included therein for implementing various functions can also be considered as structures within the hardware component. Alternatively, the means for implementing various functions can even be considered as both a software module implementing a method and a structure within a hardware component.
[0030] The systems, apparatuses, modules or units illustrated by the above embodiments can be specifically implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
[0031] For the convenience of description, the above apparatuses are described in various units by functions respectively. Of course, the functions of each unit can be implemented in one or more software and / or hardware in the implementation of the present specification.
[0032] Each of the embodiments in the present application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment mainly explains the difference from other embodiments. Especially, the device and medium embodiments are described simply because they are basically similar to the method embodiments, and the relevant parts can be referred to the part of the method embodiments.
[0033] The device and medium provided by the embodiments of the present application are one-to-one corresponding, and therefore the device and medium also have similar beneficial technical effects to the corresponding method. Since the beneficial technical effects of the method have been described in detail above, the beneficial technical effects of the device and medium will not be described here again.
[0034] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. In addition, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code. The present application is described with reference to flowcharts and / or block diagrams of the method, device (system), and computer program product according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device implemented in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in the flow(s) or block(s).
[0035] These computer program instructions can also be stored in a computer-readable memory that can direct the computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including instruction apparatus, which implements the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in the flow(s) or block(s).
[0036] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are performed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide a process for implementing the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in the flow(s) or block(s).
[0037] In a typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memories.
[0038] Memory can include non-persistent memory and / or volatile memory, such as random access memory (RAM) and / or cache memory, etc. in the form of a computer-readable medium, read only memory (ROM), or flash memory, etc. Memory is an example of computer-readable media.
[0039] Computer-readable media includes permanent and non-permanent, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital versatile disc (DVD), or other optical storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible to a computing device. According to the definition herein, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.
[0040] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not include only those elements recited, but can also include other elements not expressly listed or inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.
[0041] The above merely provides an example of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.
Claims
1. A multi-mode communication charging system adapted for a basement, characterized by, The system comprises: an AC input unit for receiving external AC power input to provide power for the entire charging system; a charging power module connected with the AC input unit, provided with a charging interface, the charging power module being used for converting AC power provided by the AC input unit into DC power and adjusting output power according to instructions of a main controller; the main controller connected with the charging power module, the main controller being used for monitoring and managing a charging process, the charging process including charging power adjustment, communication mode selection and switching, fault alarm, execution of remote control instructions, and also being used for data processing and protocol conversion to realize information interaction with a man-machine interaction unit and a multi-mode communication module; the multi-mode communication module including a PLC communication module, a 4G / 5G communication module and a LoRa communication module, the multi-mode communication module being used for information interaction with the main controller; the man-machine interaction unit connected with the main controller, the man-machine interaction unit being used for obtaining charging state information and displaying the information to a user and receiving operation instructions of the user and transmitting the instructions to the main controller for execution.
2. The system of claim 1, wherein, The PLC communication module adopts HPLC protocol or G3-PLC protocol, uses OFDM modulation mode, and has a communication rate of 100 kbps-1.2 Mbps; The PLC communication module injects signals into an AC power line through capacitive coupling and connects multiple charging piles to a concentrator through a power distribution line according to star topology networking to form a stable communication network.
3. The system of claim 1, wherein, The 4G / 5G communication module is compatible with operator networks and has a maximum communication rate of 1 Gbps; The 4G / 5G communication module has a signal strength real-time monitoring function and outputs RSRP index data to determine a decision basis according to the RSRP index data to switch communication modes when signal quality decreases.
4. The system of claim 1, wherein, The LoRa communication module has a working frequency band of 470-510 MHz, uses spread spectrum modulation technology, and has a communication distance of 1-3 km; The LoRa communication module supports tree networking mode.
5. The system of claim 1, wherein, The main controller is provided with an adaptive switching algorithm to real-time monitor signal quality and transmission state of the multi-mode communication module according to the adaptive switching algorithm, including 4G / 5G signal strength, LoRa received signal strength, PLC communication error rate and heartbeat packet transmission state; According to preset priority rules and switching conditions, the corresponding communication mode is automatically selected and switched to.
6. The system of claim 5, wherein priority and switching threshold of the adaptive switching algorithm are determined to switch modes according to the priority and switching threshold.
7. The system of claim 1, wherein, The multi-mode communication module and the main controller share resources in hardware, and the shared resources include a DSP processor, an ADC sampling circuit and a data storage unit.
8. A method of adapting a multi-mode communication charging for a basement, applied in the system as claimed in any one of claims 1-7, characterized in that, The method further comprises: The main controller collects transmission parameters of each communication module in real time, determines corresponding priority according to the transmission parameters, and determines a communication mode according to the priority and switching conditions; Modes are switched according to the communication mode, and switching states are recorded; Communication parameters are configured through a pre-configured cloud platform, and an OTA upgrade operation is performed.
9. A multi-mode communication charging device adapted to a basement, characterized by The system comprises: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the basement-adapted multi-mode communication charging device to perform the method of claim 8.
10. A non-transitory computer storage medium storing computer-executable instructions that, when executed, cause a computer to perform: the computer executable instructions are configured to perform the method of claim 8.